Stockholders' Equity - Summary of Share-based Compensation Expense for all Stock Awards (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Share-based Compensation
Share-based compensation expense before taxes	$ 193	$ 164	$ 129
Related income tax benefits	(39)	(48)	(41)
Share-based compensation expense, net of taxes	154	116	88
Cost of product revenue
Share-based Compensation
Share-based compensation expense before taxes	16	12	9
Cost of service and other revenue
Share-based Compensation
Share-based compensation expense before taxes	3	2	2
Research and development
Share-based Compensation
Share-based compensation expense before taxes	60	51	42
Selling, general and administrative
Share-based Compensation
Share-based compensation expense before taxes	$ 114	$ 99	$ 76

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Balance Type:	debit
Period Type:	duration